Chemistry Quiz - Competitive Exams JEE

Free practice quiz: Chemistry (Competitive Exams JEE). 72 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which quantum number determines the shape of an orbital?

   1. Spin (s)
   2. Azimuthal (l)
   3. Magnetic (m)
   4. Principal (n)
   Show answer

   Answer: B. Azimuthal (l)

2. The pH of a 0.001 M HCl solution is?

   1. 1
   2. 11
   3. 3
   4. 2
   Show answer

   Answer: C. 3

3. The correct order of increasing energy of orbitals according to the (n + l) rule is:

   1. 4s < 3d < 4p
   2. 3d < 3p < 4s
   3. 3d < 4s < 4p
   4. 4p < 3d < 4s
   Show answer

   Answer: A. 4s < 3d < 4p

4. The conjugate base of HSO4- is:

   1. SO3
   2. SO42-
   3. H2SO4
   4. OH-
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   Answer: B. SO42-

5. Which of the following compounds gives a positive Tollens' test?

   1. Benzene
   2. Acetone
   3. Diethyl ether
   4. Acetaldehyde
   Show answer

   Answer: D. Acetaldehyde

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